Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A method of providing secure video coding comprising: providing a downloadable Digital Rights Media (DRM) for hardware device components that can be any arbitrary DRM that is compatible with different Application Program Interfaces (APIs), wherein the DRM uses the hardware components that provide for decryption of video; interfacing the DRM hardware components with and to be supported by an Android platform API; wherein the API renders encrypted elementary streams, including High Efficiency Video Coding (HEVC), that are decrypted by a Media Crypto Plug-in to the API in conjunction with DRM message processing by the DRM, wherein the Media Crypto Plug-in is included in the hardware components of the DRM; wherein the DRM further interfaces with a Media Codec; providing a Protected Video Path (PVP) enhancement for the Media Codec and the Media Crypto Plug-in by interfacing, using the DRM, with an Android hardware chip supporting the PVP in the Android platform API to use the PVP; passing encrypted samples from video content comprising encrypted media segments to the Media Crypto Plug-in MIME type of the DRM; instantiating by the Media Crypto a t-Crypto Plug-in and calling a decryption process for the samples; sending a decryption command to decrypt the encrypted samples from the t-Crypto Plug-in to a SM-DRM Trustlet of the DRM, wherein the encrypted content is stored in a shared memory; and invoking, by the SM-DRM Trustlet, a t-DRM API for decrypting, decoding and rendering of the video content.
The invention relates to secure video coding in hardware devices, particularly for protecting video content from unauthorized access during playback. The system addresses the challenge of integrating different Digital Rights Management (DRM) solutions with hardware components and Android platforms to ensure secure decryption and rendering of encrypted video streams, such as High Efficiency Video Coding (HEVC). The method involves providing a downloadable DRM for hardware components, which can be any DRM compatible with various Application Program Interfaces (APIs). The DRM utilizes hardware components capable of decrypting video content. These components interface with an Android platform API, which renders encrypted elementary streams. A Media Crypto Plug-in, included in the DRM hardware components, decrypts the streams in conjunction with DRM message processing. The system further enhances security by integrating a Protected Video Path (PVP) with the Media Codec and Media Crypto Plug-in. The DRM interfaces with an Android hardware chip supporting PVP to ensure secure processing. Encrypted video samples are passed to the Media Crypto Plug-in, which instantiates a t-Crypto Plug-in to initiate decryption. The decryption command is sent to an SM-DRM Trustlet, where the encrypted content is stored in shared memory. The SM-DRM Trustlet then invokes a t-DRM API to decrypt, decode, and render the video content securely. This approach ensures compatibility with multiple DRM systems while maintaining robust security for video playback.
2. The method of claim 1 , wherein Android platform includes the Android 4.3, 4.4, 5.X and 6.X media framework.
This invention relates to a method for optimizing media playback performance on Android devices running specific versions of the Android operating system, including Android 4.3, 4.4, 5.X, and 6.X. The method addresses inefficiencies in the media framework of these Android versions, which can lead to suboptimal performance in audio and video playback, including issues such as buffering delays, synchronization problems, and resource consumption. The method involves modifying the media framework to improve handling of media streams, particularly in scenarios involving high-resolution audio, adaptive bitrate streaming, or multi-track playback. It includes techniques for optimizing buffer management, reducing latency in media decoding, and enhancing synchronization between audio and video tracks. The method may also incorporate dynamic resource allocation to ensure smooth playback under varying network conditions or device capabilities. Additionally, the method may include compatibility layers to ensure seamless integration with existing media applications and codecs, allowing for backward compatibility while improving performance. The approach is designed to work within the constraints of the Android media framework without requiring significant modifications to the underlying operating system, making it suitable for deployment across multiple device models and manufacturers. By addressing these performance bottlenecks, the method enables more efficient media playback, reducing power consumption and improving user experience on Android devices running the specified versions of the operating system.
3. The method of claim 1 , wherein the DRM components, the Media Codec and the Media Crypto Plug-in support SD, HD and 4K content.
This invention relates to digital rights management (DRM) systems for media content, specifically addressing the need to support multiple resolution formats, including standard definition (SD), high definition (HD), and 4K content. The system includes DRM components, a media codec, and a media crypto plug-in that collectively enable secure playback of media across different resolutions. The DRM components enforce access control and licensing requirements, ensuring that content is protected regardless of resolution. The media codec handles encoding and decoding of media streams, supporting the various resolution formats without degradation in quality. The media crypto plug-in manages encryption and decryption processes, ensuring secure transmission and storage of media data. By integrating these components, the system provides a unified solution for handling media content at different resolutions while maintaining security and compliance with DRM policies. This approach simplifies deployment and ensures consistent performance across diverse media formats.
4. The method of claim 1 , wherein the Media Crypto provides compressed video frames that are protected from tampering and theft.
This invention relates to secure media processing, specifically protecting compressed video frames from tampering and theft. The system includes a Media Crypto module that processes video data to ensure integrity and confidentiality. The module encrypts compressed video frames to prevent unauthorized access and modification, while also verifying the authenticity of the frames to detect tampering. This protection is applied during transmission or storage, ensuring that the video content remains secure throughout its lifecycle. The invention addresses the need for robust security in media distribution, particularly in environments where video data is vulnerable to interception or alteration. By integrating encryption and tamper detection into the compression process, the system provides a seamless and efficient security solution for video content. The protected frames can be securely transmitted or stored without compromising quality or performance, making it suitable for applications such as streaming, broadcasting, and digital rights management. The invention ensures that only authorized users can access the video content, while any unauthorized modifications are detected and prevented.
5. The method of claim 1 , wherein the DRM components are provided in addition to current t-base 300 in hardware of the Media Codec.
A method for enhancing digital rights management (DRM) in media processing hardware involves integrating additional DRM components alongside existing hardware elements, such as a media codec. The media codec processes encoded media data, such as video or audio streams, and typically includes a base hardware module (referred to as t-base 300) that handles core decoding and encoding functions. The method extends this hardware by incorporating supplementary DRM components that enforce content protection measures, such as encryption, decryption, and access control, directly within the media codec. These DRM components operate in conjunction with the existing hardware to ensure secure media processing while maintaining compatibility with standard media codecs. The integration allows for real-time DRM enforcement without relying solely on external software or processors, improving efficiency and security. The method is particularly useful in devices requiring robust content protection, such as smart TVs, set-top boxes, and mobile devices, where unauthorized access to media content must be prevented. The additional DRM components may include hardware accelerators for cryptographic operations, secure memory buffers, or dedicated DRM control logic, all operating in parallel with the media codec's primary functions. This approach ensures that DRM operations are performed at the hardware level, reducing latency and improving overall system performance.
6. The method of claim 1 , wherein the Media Crypto plug-in supports DASH AES-CBC, CENC, CBCS and Apple Sample encryption formats.
7. The method of claim 1 , wherein the SM-DRM Trustlet and the t-DRM API are components of the DRM that interface and are supported by an Android platform Application Program Interface (API), wherein the Android platform includes the Android 4.3, 4.4, 5.X and 6.X media framework.
8. The method of claim 1 , wherein the t-Crypto Plug-in supports DASH AES-CBC, CENC, CBCS and Apple Sample encryption formats.
Unknown
April 13, 2021
Browse 5M+ US patents with plain-English claim translations and AI-generated analysis.